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How to Replace a Jaguar XF Replacement Key Fob Modern keyfobs that are high-tech can't be easily replaced. In reprogram jaguar xf key fob to older keys made of metal that can be duplicated at any hardware store for less than $5, modern key fobs cannot be easily replaced. The battery needs to be replaced when the range of the key fob diminishes and the Jaguar vehicle's message center display the message “SMART KEY” BATTERY LOW. Keyless Entry The convenience and security of keyless entry systems is increasing in popularity with car buyers. Certain models lock or unlock the door when you touch it, which is much easier than trying to locate keys in your pocket. In addition, these systems tend to be more secure than standard car locks because they employ rolling codes that are changed each time you use the key fob. This makes it harder for thieves to steal the signal or alter the signal. Key fobs emit radio frequency that carry a unique digital identification code that can only be recognized by the vehicle. When you press a button on the Jaguar's key fob the computer in the car receives the number and responds by unlocking doors and triggering the motor. The key fob may also send a signal to a trunk receiver that can be used to open the tailgate without having to touch it. Unfortunately, thieves are finding ways around these systems. They've been able make use of software that can decode the signals sent by key fobs, or even remotely reprogram keys using the car's transponder code. Many experts recommend installing a shielded case on your keyfob. These cases limit the distance frequencies emitted by the fob can travel. They are available at a majority of auto parts stores for under $10. Remote Start Your Jaguar XE keyfob can be used to remotely lock and unlock your vehicle. Press and hold the lock button while keeping the key fob within range of your vehicle. Press the start button when the door handles have been unlocked. If the key fob isn't within range the car will display a “SMART KEY BATTERY LOW” message. All new Jaguar models are equipped with remote-starting capability. With this feature, you are able to start your vehicle's engine through the convenience of your smartphone. This is particularly useful if you're returning home after a long drive or when it's cold outside to turn up the heat. You'll be able to conserve energy, avoid pollution and preserve the environment while you're driving. These new smart keys have built-in security chips unlike the older metal keys you could purchase at hardware stores. This feature safeguards your vehicle from theft should someone find it and tries to use. This also makes it difficult for locksmiths to duplicate the keys, meaning you'll have to visit your dealer to purchase replacement Jaguar XF keys. The days of buying replacement keys for cars at the local hardware store are going into the past, as modern car owners opt for smarter key fobs that allow you to control your vehicle using an app. These new technologies make vehicles more secure, easy to use, and capable than ever. However, that extra function is a cost: the latest key fobs must be ordered from the dealership and then programmed with your vehicle. Anti-Theft System The anti-theft system is designed to stop criminals from absconding with Jaguars. It uses a unique technology known as Ultra Wideband (UWB) to detect the key fob signal and confirm it's authentic. This prevents so-called relay attacks that could block the signal that is used to unlock or start the car even when the key isn't in the ignition. The system comes with a Guardian Mode that reports if the vehicle is not locked or started. Jaguar suggests that you turn on this feature during the handover process. Additionally to that, the Jaguar XF features an immobilizer that ensures that the key fob is being used to start the engine. The immobilizer turns off the ignition coil, and injectors if the key isn't being used. This stops the car from starting. Unlike older vehicles and vehicles, modern Jaguars come with sophisticated security systems that require specialized tools and equipment for servicing. Diagnostic tools like scanners can be utilized to identify the diagnostic trouble codes of the anti-theft control systems and check real-time data and freeze frame. The technician also needs to physically test analog voltages throughout the system. You can do this by connecting a multimeter to the anti-theft control module, or by using factory software. This is generally the best method to determine the condition of the anti theft system. If the technician detects a problem, they may need to replace the module. Bluetooth Bluetooth has been around for over twenty years and has revolutionized wireless communications. It is a common technology and can be found in everything from light bulbs to smartphones and automobiles. To establish a Bluetooth connection between two devices, both have to have it turned on and be in close proximity for the communication to take place. You may need to go into the settings of your device based on the model. An iOS or Android phone will include an Bluetooth menu; a desktop computer will usually have one within the Control Panel or the System Preferences. The initial Bluetooth connection must be paired and the two devices exchanging their unique addresses, which are displayed as numbers in hexadecimal format. Contrary to other RF technologies, Bluetooth is secure, with encryption and authentication that protect data transmissions. Bluetooth operates in the unlicensed ISM frequency band, and a standardized set of guidelines and specifications distinguishes it from other protocols like ZigBee and WiFi. Most Jaguar XF models offer Bluetooth connectivity by default, and you can pair any compatible phone to the car using InControl. The steps for pairing your phone to the car vary depending on the manufacturer, so make sure you read the InControl manual for the precise steps. It is also possible to enter a passkey for the connection to be completed, which will be shown on the touchscreen of your vehicle.